]>
Commit | Line | Data |
---|---|---|
d5ec4f27 LC |
1 | /* |
2 | * QEMU Error Objects | |
3 | * | |
4 | * Copyright IBM, Corp. 2011 | |
5 | * | |
6 | * Authors: | |
7 | * Anthony Liguori <aliguori@us.ibm.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU LGPL, version 2. See | |
10 | * the COPYING.LIB file in the top-level directory. | |
11 | */ | |
e4ea5e2d SW |
12 | |
13 | #include "qemu-common.h" | |
d5ec4f27 | 14 | #include "error.h" |
f795e743 LC |
15 | #include "qjson.h" |
16 | #include "qdict.h" | |
d5ec4f27 | 17 | #include "error_int.h" |
d5ec4f27 | 18 | #include "qerror.h" |
d5ec4f27 LC |
19 | |
20 | struct Error | |
21 | { | |
22 | QDict *obj; | |
23 | const char *fmt; | |
24 | char *msg; | |
25 | }; | |
26 | ||
27 | void error_set(Error **errp, const char *fmt, ...) | |
28 | { | |
29 | Error *err; | |
30 | va_list ap; | |
31 | ||
32 | if (errp == NULL) { | |
33 | return; | |
34 | } | |
d195325b | 35 | assert(*errp == NULL); |
d5ec4f27 | 36 | |
7267c094 | 37 | err = g_malloc0(sizeof(*err)); |
d5ec4f27 LC |
38 | |
39 | va_start(ap, fmt); | |
40 | err->obj = qobject_to_qdict(qobject_from_jsonv(fmt, &ap)); | |
41 | va_end(ap); | |
42 | err->fmt = fmt; | |
43 | ||
44 | *errp = err; | |
45 | } | |
46 | ||
79020cfc LC |
47 | Error *error_copy(const Error *err) |
48 | { | |
49 | Error *err_new; | |
50 | ||
51 | err_new = g_malloc0(sizeof(*err)); | |
52 | err_new->msg = g_strdup(err->msg); | |
53 | err_new->fmt = err->fmt; | |
54 | err_new->obj = err->obj; | |
55 | QINCREF(err_new->obj); | |
56 | ||
57 | return err_new; | |
58 | } | |
59 | ||
d5ec4f27 LC |
60 | bool error_is_set(Error **errp) |
61 | { | |
62 | return (errp && *errp); | |
63 | } | |
64 | ||
65 | const char *error_get_pretty(Error *err) | |
66 | { | |
67 | if (err->msg == NULL) { | |
68 | QString *str; | |
69 | str = qerror_format(err->fmt, err->obj); | |
7267c094 | 70 | err->msg = g_strdup(qstring_get_str(str)); |
d5ec4f27 LC |
71 | QDECREF(str); |
72 | } | |
73 | ||
74 | return err->msg; | |
75 | } | |
76 | ||
77 | const char *error_get_field(Error *err, const char *field) | |
78 | { | |
79 | if (strcmp(field, "class") == 0) { | |
80 | return qdict_get_str(err->obj, field); | |
81 | } else { | |
82 | QDict *dict = qdict_get_qdict(err->obj, "data"); | |
83 | return qdict_get_str(dict, field); | |
84 | } | |
85 | } | |
86 | ||
87 | QDict *error_get_data(Error *err) | |
88 | { | |
89 | QDict *data = qdict_get_qdict(err->obj, "data"); | |
90 | QINCREF(data); | |
91 | return data; | |
92 | } | |
93 | ||
94 | void error_set_field(Error *err, const char *field, const char *value) | |
95 | { | |
96 | QDict *dict = qdict_get_qdict(err->obj, "data"); | |
0ed6dc1a | 97 | qdict_put(dict, field, qstring_from_str(value)); |
d5ec4f27 LC |
98 | } |
99 | ||
100 | void error_free(Error *err) | |
101 | { | |
102 | if (err) { | |
103 | QDECREF(err->obj); | |
7267c094 AL |
104 | g_free(err->msg); |
105 | g_free(err); | |
d5ec4f27 LC |
106 | } |
107 | } | |
108 | ||
109 | bool error_is_type(Error *err, const char *fmt) | |
110 | { | |
111 | const char *error_class; | |
112 | char *ptr; | |
113 | char *end; | |
114 | ||
acceb4d9 AL |
115 | if (!err) { |
116 | return false; | |
117 | } | |
118 | ||
d5ec4f27 LC |
119 | ptr = strstr(fmt, "'class': '"); |
120 | assert(ptr != NULL); | |
121 | ptr += strlen("'class': '"); | |
122 | ||
123 | end = strchr(ptr, '\''); | |
124 | assert(end != NULL); | |
125 | ||
126 | error_class = error_get_field(err, "class"); | |
127 | if (strlen(error_class) != end - ptr) { | |
128 | return false; | |
129 | } | |
130 | ||
131 | return strncmp(ptr, error_class, end - ptr) == 0; | |
132 | } | |
133 | ||
134 | void error_propagate(Error **dst_err, Error *local_err) | |
135 | { | |
d195325b | 136 | if (dst_err && !*dst_err) { |
d5ec4f27 LC |
137 | *dst_err = local_err; |
138 | } else if (local_err) { | |
139 | error_free(local_err); | |
140 | } | |
141 | } | |
142 | ||
143 | QObject *error_get_qobject(Error *err) | |
144 | { | |
145 | QINCREF(err->obj); | |
146 | return QOBJECT(err->obj); | |
147 | } | |
148 | ||
149 | void error_set_qobject(Error **errp, QObject *obj) | |
150 | { | |
151 | Error *err; | |
152 | if (errp == NULL) { | |
153 | return; | |
154 | } | |
7267c094 | 155 | err = g_malloc0(sizeof(*err)); |
d5ec4f27 LC |
156 | err->obj = qobject_to_qdict(obj); |
157 | qobject_incref(obj); | |
158 | ||
159 | *errp = err; | |
160 | } |